Paul Philip Barraud, Marine chronometer

INTRODUCTION
- Man and the stars
SECTION I
- The dawn of astronomy: Mesopotamia, Egypt and the Biblical Cosmos
SECTION II
- The cosmos becomes a sphere
SECTION III
- The geometry of the cosmos
SECTION IV
- The skies of Islam
SECTION V
- Evangelisation of the cosmos
SECTION VI
- The Renaissance of Astronomy
SECTION VII
- Galileo: the cosmos through the telescope
SECTION VIII
- From Galileo to Newton

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Paul Philip Barraud (19th century)
Marine chronometer, ca. 1850
Bologna, Museo della Specola, Università di Bologna, inv. MdS 75

Marine chronometers, developed from John Harrison's original cronographs but becoming gradually smaller and more accurate over time like the one on display here, were irreplaceable instruments for measuring time and for determining longitude. They soon became standard instrumentation on board every ship and in every astronomical observatory.